Designed by Walter da Silva,
the Proteo was a 2+2 coupe based on the Alfa Romeo 164. It made its debut
at the Geneva Motorshow, March 1991. Many of the Proteos features were
later to be seen on the 1996 GTV & Spider.

The chassis was a shortened
164 floorpan while the engine was a quad-cam 24-valve 3.0-litre unit producing
around 260 bhp.